Processing an occasional query string?

[eluser]tmcw[/eluser]
This is probably the fifth time this has been asked, but there haven't been any working solutions yet. I want to organize my application usually with clean URLs, but one URL will have a query string that I can't change because it is given by another site (Flickr). Is there anyway to not get a 404 on this page and instead be able to access $_GET data from that string? I'm considering mod_rewriting it before CodeIgniter sees it, but there must be a better way to do this.

-And I have
$config['enable_query_strings'] = TRUE;

Already

Thanks for any help.

[eluser]WhatTheFawk[/eluser]
I just had this same problem, try setting:

$config['uri_protocol'] = "PATH_INFO";

When I did that it got rid of the 404 page when any page had a ?var=blah after it. I don't know about accessing the data after that, but try these posts for that part or if my above solution doesn't work:

http://ellislab.com/forums/viewthread/63889/
http://ellislab.com/forums/viewthread/64979/